Swivel mounting for windows



June 4,1957 F. A. CHRISTENSEN- 2,794,206

SWIVEL MOUNTING FOR WINDOWS I Filed June 20, 1955 INVENTOR.

FRANTS ALLAN CHRISTENSEN BY WM, v i-4+ WM fitt f United States Patent2,794,206 SWIVEL MOUNTING FOR WINDOWS Frants Allan Christensen,Copenhagen, Denmark Application June 20, 1955, Serial No. 516,561 Claimspriority, application Canada December 14, 1954 Claims. (Cl. 16-140) Theinvention relates to a swivel mounting for windows of the kind t-urnableon a horizontal axis and capable of being turned from closed position180 into the room into position for polishing.

It is the object of the invention to provide a swivel mounting of thiskind which even if made of relatively thin and light materials will bevery robust and therefore capable of carrying even large windows, andwhich is of attractive appearance and so designed that all moving partsare encased in externally smooth, box-shaped casings which will not marthe appearance of the window.

It is a further object of the invention to provide a swivel mounting ofthis kind in which the window frame may easily be lifted from thecasement if this should be necessary.

Further, it is an object of the invention to provide a swivel mountingof the kind mentioned which is so designed that the trunnion carryingthe window frame will be unable to slip out of its bearing even if theframe should get out of the exact plane, for instance, by warping in thecourse of time.

Swivel mountings of \the kind herein dealt with possess the advantagethat the axis on which the window frame is turning may be situated veryclose to the centre of gravity of the window, the construction being sodesigned that the trunnion will swing during the turning movement of thewindow so that the entire frame may be swung into the room when thewindow is to be placed in position for polishing without the frameimpinging on the casement until it has been turned 180.

It will, however, generally be desirable to give one end of the frame aslight excess weight so that the window will tend to keep closed whenleft to itself. As in many cases such windows may be very large, it willbe of importance not to impart an excessive turning moment to suchwindows due to the presence of this excess weight. For this reason it isa further object of the invention to provide a swivel mounting of thekind mentioned by means of which it will be possible to control thespeed at which the frame may turn when left to itself.

The drawing shows an embodiment of a swivel mounting according to theinvention.

Fig. 1 shows the swivel mounting with its parts in a positioncorresponding to that in which the window frame is swung somewhat out ofclosed position.

Fig. 2 shows the carrying'arm of the bearing in side elevation.

Fig. 3 the same seen from the lefthand side in Fig. 2, partly incross-section.

Fig. 4 shows a cross-section through line IV-IV in Fig. 1 of the framemounting, and

Fig. 5 .a cross-section through line V-V in Fig. l of the casementmounting.

The swivel mounting of the window consists of a casement mounting 2fixed to the casement 1 having a flange countersunk into the easementand a grooved guide 3 "ice in the upper part of which is fastened abearing 4 closed 'by a lid 5 held in place by a screw 6.

To the window frame 7 is fixed a box-shaped mounting 8 provided with atrunnion bearing 9 with a fixed guide tappet 10 fitting into the groove3. The trunnion bearing 9 is provided with a notch 11 through which aturnable pawl 12 on the frame mounting 8 may enter. The pawl may be keptin engagement by a keep-screw 13.

The swivel mounting further comprises a carrying arm 14, provided with atrunnion 15 fitting into bearing 4 and a trunnion 16 fitting intobearing 9. Trunnion 16 has a conically machined cavity 17 in which anexpander 18 is inserted capable of being adjusted in the trunnion bymeans of a set-screw 19. The expander 18 and set screw 19 have beenomitted in Fig. 2 to make the showing of the construction more distinct.Trunnion 16 further has a groove 20 which may be engaged by pawl 12 whenthe trunnion is in place in bearing 9. When the parts are assembled asshown in Fig. l, the frame mounting 8 will rest on trunnion 16 on arm 14which is suspended from the easement mounting 2, trunnion 15 beingcarried by bearing 4. Furthermore, tappet 10 on the frame mounting is inengagement with groove 3 and is thereby forced to move upwards anddownwards when the frame mounting 8 is turned on trunnion 16. As aconsequence, trunnion 16 on which the frame turns will during theswinging motion of the window be carried from a position at about thecentre of the easement 1 to a position outside the easement, so that theframe which is forced to follow suit is carried into the room while itis being turned through so that in this mannet the window will be placedin a convenient position for cleaning.

If it is desired to remove the frame from the easement, it will only benecessary to remove lid 5 by unscrewing screw 6, and the frame with arms14 may then be lifted clear of the bearing 4.

Through slit 11 pawl 12 engages groove 20 and thereby prevents trunnion16 from slipping out of its bearing 9 even if in the course of time thewindow frame should become warped.

The ease of movement of the window may be adjusted by means of screw 19which will be easily accessible when the window frame has been swunginto position for cleaning. This applies also to screw 13.

The swivel mounting may be constructed in several ways other than thatshown and may, more particularly be used in connection with coupledframes of the kind used in double windows in which each pane is fittedinto its own frame, the two frames being normally coupled together andturned as one unit, but may be separated when the windows are to becleaned.

I claim:

1. Swivel mounting for windows turnable on a horl zon-tal axis andcapable of being turned 180 into the room into position for cleaning,and consisting of a casement mounting with a trunnion bearing and avertical guide groove, a frame mounting with a trunnion bearing and atappet spaced therefrom, said tappet being slidable in the groove of theeasement mounting and, an arm with two trunnions carrying the Windowframe and each fitting into a trunnion bearing, one in the easementmounting and one in the frame mounting.

2. Swivel mounting as claimed in claim 1, in which the;

trunnion bearing of the casement mounting is an open bearing coveredwith a removable lid.

3. Swivel mounting as claimed in claim 1, in which, the trunnion bearingof the frame mounting is provided. with a notch for a locking pawlturnably mounted on the frame mounting, one of said trunnions on saidarm having a groove therein, said pawl through the said notch en 3gaging in said groove in the trunnion of the arm resting in the trunnionbearing of the frame mounting.

4. Swivel mounting as claimed in clah'n 1, in which the trunnion .of thearm resting in the bearing of the frame mounting is provided with abrake means.

5. Swivel mounting as claimed in claim 4, in which the trunnion of thearm resting in the frame mounting is slitted and provided with aninternal, conical cavity containing an expanding body that may beshifted axiailly by means of an adjusting device.

References Cited in the file of this patent UNITED STATES PATENTS

